JP6039816B2 - Manufacturing method and manufacturing apparatus for composite fiber, and composite fiber manufactured thereby - Google Patents

Description

  The present invention relates to a composite fiber manufacturing method and manufacturing apparatus, and a composite fiber manufactured thereby, and more particularly, a composite in which resins having different characteristics in the longitudinal direction of the fiber are continuously crossed. The present invention relates to a fiber manufacturing method and manufacturing apparatus, and a composite fiber manufactured thereby.

  As shown in FIG. 1, the known composite fiber manufacturing apparatus includes a plurality of hoppers 1 for supplying at least two kinds of solid phase resin raw materials, and solid phase resin raw materials supplied from the respective hoppers 1. A melt extruder 2 for melting and extruding, a metering pump 7 that measures a predetermined amount of the molten resin supplied from each melt extruder 2 per unit time and sends it to the spinning nozzle unit 3, and each metering pump 7 A spinning nozzle 3 for spinning the fiber W by flowing the molten resin supplied from the flow pipe and the distribution plate, a cooling unit 4 for cooling the fiber W spun from the spinning nozzle 3, A roller 5 that stretches and heat-treats the fiber W cooled in the cooling unit 4 and a winder 6 that winds the fiber W stretched and heat-treated by the roller 5 are provided.

  Depending on the cross-sectional shape of the fiber W, the type of the composite fiber manufactured by the composite fiber manufacturing apparatus having such a configuration is, for example, a core-sheath type, a side-by-side, It is divided into sea-island types. Such various composite fibers can be manufactured by setting different structures of the distribution plate and the flow path pipe disposed in the spinning nozzle unit 3.

  FIG. 2 is a cross-sectional view of an essential part showing, for example, a spinning nozzle part for producing a sea-island type composite fiber. As shown in FIG. 2, the spinning nozzle part 3 for producing a sea-island type composite fiber comprises a plurality of layers. And the nozzle plate 13 disposed below the lowermost distribution plate 12 of the distribution plates 11 and 12. Each distribution plate 11, 12 is provided with a plurality of flow pipes 14, 15 extending vertically, and the nozzle plate 13 is provided with a spinning nozzle 16 connected to the flow pipes 14, 15, and Spaces 17 and 18 are provided between the distribution plates 11 and 12 and the nozzle plate 13.

  According to such a configuration, two kinds of resins respectively supplied from the melt extruder 2 into the spinning nozzle unit 3, for example, A resin (island component, islands) and B resin (sea component, sea) After flowing into the flow path pipes 14 and 15 and the spaces 17 and 18 of the distribution plates 11 and 12, they are merged in the space 18 of the nozzle plate 13, and then spun in the spinning nozzle 16 of the nozzle plate 13.

  For this reason, the fiber W spun in the spinning nozzle 16 has a cross-sectional shape in which one B resin (sea component) surrounds a plurality of A resins (island components) as shown in FIG.

  Since such a cross-sectional shape is formed by the configuration of the distribution plates 11 and 12 and the flow channel pipes 14 and 15, the number and arrangement of the distribution plates 11 and 12 and the flow channel tubes 14 and 15 are diversified. Various composite fibers can be manufactured by making it, and it is widely used for manufacturing functional clothes such as moisture permeable waterproof and sweat-absorbing quick-drying, ultrafine yarn by manufacturing a composite fiber having a unique cross-sectional shape, Furthermore, it is also used as a forgery-preventing security thread for preventing counterfeiting of banknotes and certificates.

  However, the conventional composite fiber manufacturing method and apparatus as described above maintain the inherent fiber cross-sectional shape constant without any change in the longitudinal direction of the fiber. Since there is no change, the effects of various additional composite components in the longitudinal direction of the fiber (dye difference, physical properties (strength, elongation, elastic modulus, boil-off shrinkage, etc.), melting point difference, etc.) In particular, in the case of a safety yarn using a composite spinning used for anti-counterfeiting of securities or the like recently, forgery-preventing components of other components exist side by side in the longitudinal direction of the fiber. Further, there is a demand for improvement of problems (such as a change in hue and a decrease in fluorescence performance) in which the expression of a safety element due to an external stimulus causes interference.

  The present invention is for solving the above-mentioned conventional problems, and the object thereof is a resin having different characteristics, for example, one or more substances selected from different functional organic, inorganic, and metallic substances. The fibers having different characteristics in the longitudinal direction of the fibers are continuously discharged by continuously intersecting and discharging the same kind of resin or different kinds of resin containing molten resin in the molten state without interruption by the operation of the spinning nozzle part. It is possible to produce composite fibers having various surface effects and patterns in the longitudinal direction of the fibers, and the longitudinal crossing length can be arbitrarily determined by operating the spinning nozzle section. To produce a composite fiber having a unique longitudinal surface effect and pattern to be used as a high-performance fiber and a protective yarn, and Forming apparatus is to provide a composite fiber thereby is produced.

  In order to achieve the above object, the present invention includes a step of supplying different types of resins having different characteristics to the spinning nozzle portion via each extruder, and each molten resin supplied from each of the melt extruders. A method of producing a composite fiber comprising the step of continuously crossing and discharging different types of resins having different characteristics from the spinning nozzle portion by continuously crossing out from the spinning nozzle portion. There are features.

  In this case, the different types of resins having different characteristics are the same kind of resins or different kinds of resins including any one or more selected from different functional organic, inorganic, and metal substances, and the functional organic, inorganic The method for producing a composite fiber, wherein the metal material is at least one selected from a hue pigment, a UV-sensitive fluorescent pigment, an IR-sensitive absorption pigment, an X-ray absorption metal material, an antibacterial material, a flame retardant material, and a deodorant material There is a feature.

  The present invention also provides a plurality of hoppers for supplying different types of resins having different characteristics, a plurality of melt extruders for melting and extruding the resins supplied from the hoppers, and the plurality of melt extruders A spinning nozzle portion that discharges the molten resin supplied from and forms fibers, and the spinning nozzle portion includes a plurality of inflow passages into which the molten resin supplied from the respective melt extruders flows, and the molten resin. A spinning nozzle body having a nozzle passage for discharging, and a plurality of connecting passages for connecting each of the inflow passages to the nozzle passage, and each of the connecting passages being alternately connected to the nozzle passage. And an operating body that operates as described above.

  Further, the operating body of the present invention is disposed in the spinning nozzle body so as to be able to rotate in the forward and reverse directions around the rotation axis, and forms an outer circumferential surface around the rotation axis, Each of the connecting passages is disposed on the outer circumferential surface of the inlet and the outlet, and the outlet of each inflow passage and the inlet of the nozzle passage are disposed opposite to the outer circumferential surface of the operating body. The inlet and outlet of each connecting passage formed in the operating body are connected to the outlet of each inlet passage and the inlet of the nozzle passage alternately and continuously as the operating body rotates forward and backward. There is a feature in an apparatus for manufacturing a composite fiber to be disposed.

  Furthermore, this invention has the characteristics in the composite fiber manufactured by said manufacturing method.

  According to the composite fiber manufacturing method and composite fiber manufacturing apparatus of the present invention having the above-described characteristic configuration, the same kind containing any one or more substances selected from different functional organic, inorganic, and metal substances Fibers with different characteristics in the longitudinal direction of the fibers are continuously produced by discharging different kinds of resins with different characteristics, such as component resins or different kinds of resins, continuously intersecting without being interrupted by the operation of the spinning nozzle part. And can be configured to cross each other.

  In addition, by setting the operation speed and operation time of the spinning nozzle variously, it is possible to produce composite fibers having various surface effects and patterns in the longitudinal direction of the fibers, and the surface effects in the longitudinal direction of the fibers. Since it has a pattern, it has the effect of greatly expanding the limit width that allows various surface effects and patterns to be formed, as compared to forming various shapes in the cross section of the fiber.

  Furthermore, since the present invention can produce composite fibers having various surface effects and patterns in the longitudinal direction of the fibers, the operation speed and the operation time of the spinning nozzle part are manipulated to be unique to the longitudinal direction of the fibers. By producing a composite fiber having a surface effect and a pattern, the functionality of the fiber is further enhanced, and it is further difficult to counterfeit bills and certificates, so that it can be used very suitably as a security yarn.

FIG. 1 is a schematic diagram showing the configuration of a conventional composite fiber manufacturing apparatus. FIG. 2 is a cross-sectional view of an essential part showing a spinning nozzle portion in a conventional composite fiber manufacturing apparatus. FIG. 3 is a cross-sectional view of a composite fiber manufactured by a conventional composite fiber manufacturing apparatus. FIG. 4 is a schematic view showing a method and apparatus for producing a conjugate fiber according to the present invention. It is an operation state figure of the spinning nozzle part in the manufacturing method and manufacturing device of conjugate fiber by the present invention. It is an operation state figure of the spinning nozzle part in the manufacturing method and manufacturing device of conjugate fiber by the present invention. It is an operation state figure of the spinning nozzle part in the manufacturing method and manufacturing device of conjugate fiber by the present invention. It is an operation state figure of the spinning nozzle part in the manufacturing method and manufacturing device of conjugate fiber by the present invention. It is an operation state figure of the spinning nozzle part in the manufacturing method and manufacturing device of conjugate fiber by the present invention. It is an operation state figure of the spinning nozzle part in the manufacturing method and manufacturing device of conjugate fiber by the present invention. It is an operation state figure of the spinning nozzle part in the manufacturing method and manufacturing device of conjugate fiber by the present invention. It is an operation state figure of the spinning nozzle part in the manufacturing method and manufacturing device of conjugate fiber by the present invention. It is an operation state figure of the spinning nozzle part in the manufacturing method and manufacturing device of conjugate fiber by the present invention. It is an operation state figure of the spinning nozzle part in the manufacturing method and manufacturing device of conjugate fiber by the present invention. It is a front view which shows typically the conjugate fiber manufactured with the manufacturing method and manufacturing apparatus of the conjugate fiber by this invention.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a composite fiber manufacturing method and a manufacturing apparatus according to the invention will be described with reference to the accompanying drawings.

  FIG. 4 is a schematic diagram for explaining the method and apparatus for producing a conjugate fiber according to the present invention. The same reference numerals are given to the same components as those in the prior art, and the specific configurations and operations are not described. Omitted.

  As shown in the figure, the composite fiber manufacturing apparatus of the present invention is configured to melt and extrude a plurality of hoppers 1 for supplying different types of resins having different characteristics and the resins supplied from the hoppers 1. A plurality of melt extruders 2, a metering pump 7 that measures a predetermined amount of molten resin supplied from the plurality of melt extruders 2 per unit time and sends them to the spinning nozzle unit 3, and a metering pump 7 A spinning nozzle unit 100 for discharging the molten resin to form the fibers W.

  The method for producing a conjugate fiber of the present invention includes a step of supplying different types of resins having different characteristics to the spinning nozzle unit 100 via each melt extruder 2, and each of the melt extruders 2 supplied from each melt extruder 2. Discharging the molten resin from the spinning nozzle unit 100 in such a manner that the different types of resins having different characteristics are continuously crossed in the longitudinal direction of the fiber.

  At this time, as the different types of resins having different characteristics, for example, the same kind of resins or different kinds of resins containing one or more substances selected from different functional organic, inorganic, and metal substances can be used. The functional organic, inorganic, and metallic materials are any one selected from hue pigments, UV-sensitive fluorescent pigments, IR-sensitive absorbing pigments, X-ray absorbing metallic materials, antibacterial materials, flame retardant materials, and deodorizing materials. The above substances may be used.

  On the other hand, as shown in FIG. 5, the spinning nozzle unit 100 includes a plurality of inflow passages 111 and 112 into which the molten resin supplied from the respective melt extruders 2 flows and a nozzle passage 113 for discharging the molten resin. A spinning nozzle body 110 having a plurality of connecting passages 121 and 122 for connecting the inflow passages 111 and 112 to the nozzle passage 113, and the connecting passages 121 and 122 are alternately arranged in the nozzle passage 113. And an operating body 120 that operates so as to be continuously connected.

  The operating body 120 is disposed inside the spinning nozzle body 110. For this purpose, a space 114 having a shape corresponding to the operating body 120 is formed inside the spinning nozzle body 110.

  The operation body 120 is disposed in the space 114 of the spinning nozzle body 110 so as to be rotatable in the forward and reverse directions around the rotation shaft 130. For this purpose, the operating body 120 forms an outer circumferential surface 123 centered on the rotating shaft 130, and the space 114 of the spinning nozzle body 110 is formed in a circular shape.

  The connection passages 121 and 122 of the operation body 120 are formed such that the inlets 121a and 122a and the discharge ports 121b and 122b are disposed on the outer circumferential surface 123, and the inflow passages 111 of the spinning nozzle body 110 are formed. , 112 are formed such that the discharge ports 111a, 112a are arranged to face the outer circumferential surface 123 of the operating body 120 through the space 114, and the nozzle passage 113 of the spinning nozzle body 110 is The inflow port 113 a is formed so as to be opposed to the outer circumferential surface 123 of the operation body 120 through the space 114.

  The operation of such a configuration will be described as follows. First, as shown in FIG. 4, when different types of resins having different characteristics, for example, A resin and B resin are supplied to the respective melt extruders 2 through the respective hoppers 1, the A resin and the B resin are respectively melted. It is melted in the extruder 2 and supplied to the spinning nozzle unit 100.

  When the melted A resin and B resin flow into the inflow passages 111 and 112 formed in the spinning nozzle body 110 of the spinning nozzle section 100, as shown in FIGS. When the inlet 121a and the outlet 121b of the connecting passage 121 are connected to the outlet 111a of the inlet passage 111 on the A resin side and the inlet 113a of the nozzle passage 113, only the A resin is passed through the nozzle passage 113. Is exhaled.

  Next, the operating body 120 rotates by a predetermined angle in the direction of the arrow (positive direction), and as shown in FIGS. 7 and 8, the outlets 121a and 122a of the connection passages 121 and 122 on both sides of the operating body 120 are exhausted. When the outlets 121b and 122b are respectively connected to the discharge ports 111a and 112a of the inflow passages 111 and 112 on the A resin side and the B resin side and the inflow port 113a of the nozzle passage 113, respectively, Resin and B resin are discharged in half.

  Next, the operation body 120 is further rotated by a predetermined angle in the arrow direction (forward direction), and as shown in FIGS. 9 and 10, the inlet 121 a and the discharge port of the connection passage 122 on the B resin side of the operation body 120. When 121 b is connected to the discharge port 112 a of the inflow passage 112 on the B resin side and the inflow port 113 a of the nozzle passage 113, only the B resin is discharged through the nozzle passage 113.

  Next, the operating body 120 rotates by a predetermined angle in the direction of the arrow (reverse direction), and as shown in FIGS. 11 and 12, the inlets 121a and 122a of the connection passages 121 and 122 on both sides of the operating body 120 are exhausted. When the outlets 121b and 122b are respectively connected to the discharge ports 111a and 112a of the inflow passages 111 and 112 on the A resin side and the B resin side and the inflow port 113a of the nozzle passage 113, respectively, Resin and B resin are discharged in half.

  Next, the operating body 120 further rotates by a predetermined angle in the arrow direction (reverse direction), and as shown in FIGS. 13 and 14, the inlet 121 a and the outlet of the connection passage 121 on the A resin side of the operating body 120. When 121 b is connected to the discharge port 111 a of the inflow passage 111 on the A resin side and the inflow port 113 a of the nozzle passage 113, only the A resin is discharged through the nozzle passage 113.

  In this way, by repeatedly rotating the operation body 120 in the forward and reverse directions, different types of A resin and B resin having different characteristics are formed so as to continuously intersect with the longitudinal direction of the fiber W as shown in FIG. Can be produced.

  The composite fiber produced in this way is formed by repeatedly forming the cross section a of the A resin and the B resin and the continuous section b of the A resin or B resin in the longitudinal direction of the fiber W, and the cross section a is The inclination angle θ is determined by adjusting the rotation speed (operation speed) of the operating body 120, and the length of the continuous section b is determined by adjusting the delay time when the rotation direction is switched.

  For this reason, various surface effects and patterns can be repeatedly formed in the longitudinal direction of the fiber W by adjusting the rotation speed and delay time of the operating body 120 and the lengths and diameters of the connecting passages 121 and 122, and Various surface effects and patterns can be formed by adjusting the rotation speed and delay time of the operation body 120 regularly or arbitrarily.

  In addition, the composite fiber of the present invention produced in this way is a resin (PET IV 0.65: (VS) IV 0.75, PP MI, which is the same material, but has different molecular weights) in the longitudinal direction of the fiber W. 20: MI 40, etc.) and resins with different physical properties (PET: PBT, PET: PTT, nylon 6: nylon 66, etc.) are continuously present, the degree of molecular orientation varies depending on the stretching and spinning conditions. Can generate composite fibers with various surface effects and patterns, and in the case of dyeing, the two-tone dyeing effect is due to the difference in dyeability due to the difference in orientation or crystallinity. Can be obtained.

  Furthermore, when there is a continuous resin in the longitudinal direction of the fiber W, even if it is the same material, the functions such as the dyeability are improved, the dyeability is different during post-processing dyeing, and thus two-tone dyeing. An effect can be obtained.

  Furthermore, even when the same material is used in the longitudinal direction of the fiber W and the pigmented resin is continuously present, a new two-tone effect can be obtained by the presence of another hue in the longitudinal direction.

  Furthermore, when a resin having a melting point difference is continuously present in the longitudinal direction of the fiber W, the woven fabric can obtain a film effect by being welded by the difference in melting point during the heat treatment after weaving.

  In addition to these, in the longitudinal direction of the fiber W, even when the same material is used, a single component and a composite component (core-sheath type, split type, sea-island type, etc.) are continuously present. In addition to the increase in effects due to the use of pigments, melting point differences, etc., it is possible to expect an improvement in fiber functionality by partial reduction and removal by weight reduction processing.

  On the other hand, the present invention uses the same component resin or different component resin containing different functional pigments and substances (ordinary hue pigments, UV-sensitive fluorescent pigments, IR-sensitive absorption pigments, X-ray absorption metal substances, etc.). In this case, a composite fiber having a safety yarn function having different optical characteristics in the longitudinal direction of the fiber W can be produced.

  For this reason, it is a security that has different optical characteristics in the longitudinal direction of fibers that have a uniform boundary surface without any inconvenience of secondary special dyeing or false twisting (twist) after existing spinning. Since the yarn can be manufactured, the process is simple and the quality is excellent. In addition, since the yarn can be mass-produced, the manufacturing cost can be reduced.

  Further, the operation of the spinning nozzle unit 100 can easily and arbitrarily adjust the crossing length in the longitudinal direction of the fiber, so that the function of the safety yarn having a unique pattern in the longitudinal direction of the fiber W can be performed.

  Furthermore, by using the masterbatch method (M / B), functional pigments and substances are introduced into the fiber, so that they are excellent in durability in various environments such as wash fastness. Different types of polymer resins that use different dyeing methods are used without being put into the resin, or the same resin modified with a different dyeing speed even in the same resin crosses in the longitudinal direction and is a composite fiber When the dyeing is performed after the production, a composite fiber having a hue different in the longitudinal direction of the fiber W or a color difference due to the dyeing method and dyeing difference of each polymer can be produced.

  In the present invention, different types of resins having different characteristics are supplied to the spinning nozzle portions via the respective melt extruders, and the molten resins supplied from the respective melt extruders are continuously crossed from the spinning nozzle portions. By discharging, a composite fiber in which different types of resins having different characteristics are continuously crossed in the longitudinal direction of the fiber is produced. The spinning nozzle section includes a spinning nozzle body having a plurality of inflow passages into which the molten resin supplied from each melt extruder flows and a nozzle passage for discharging the molten resin, and the inflow passages as nozzle passages. An operating body having a plurality of connection passages for connection and operating so that each connection passage is alternately and continuously connected to the nozzle passage.

  The above-described embodiment is merely a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiment, and this field is within the technical idea of the present invention and the scope of the claims. Various modifications, changes, or substitutions can be made by those skilled in the art, and it should be understood that such embodiments are within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Hopper 2 ... Melt extruder 100 ... Spinning nozzle part 110 ... Spinning nozzle body 111, 112 ... Inflow passage 113 ... Nozzle passage 120 ... Operation body 121, 122 ... Connection passage 123 ... Outer edge surface 130 ... Rotating shaft W ... Fiber

Claims (7)

Supplying different kinds of first resin and second resin having different characteristics to the spinning nozzle portion via each melt extruder;
Each molten resin supplied from each of the melt extruders in the longitudinal direction from the spinning nozzle portion, a continuous section (b) of only the first resin, and a continuous section (b) of only the second resin, Are discharged alternately so as to be continuously formed across an intersecting section (a) in which a boundary having an inclination angle (θ) is formed between the first resin and the second resin. Steps,
With
The discharge step includes continuously changing a discharge ratio between the first resin and the second resin so that the inclination angle (θ) is generated in a longitudinal direction at a boundary between the first resin and the second resin. A method for producing a composite fiber.   The different types of the first resin and the second resin having different characteristics are the same kind of resins or different kinds of resins including any one or more selected from different functional organic, inorganic, and metal substances. The manufacturing method of the said composite fiber of Claim 1 characterized by the above-mentioned.   The functional organic, inorganic, and metal materials are at least one selected from hue pigments, UV-sensitive fluorescent pigments, IR-sensitive absorption pigments, X-ray absorption metal materials, antibacterial materials, flame retardant materials, and deodorizing materials. The method for producing the composite fiber according to claim 2, wherein the composite fiber is provided. A plurality of hoppers for supplying different types of first resin and second resin having different characteristics;
A plurality of melt extruders for melting and extruding the resin supplied from each hopper;
A spinning nozzle part for discharging the molten resin supplied from the plurality of melt extruders to form fibers;
With
The spinning nozzle part is
A spinning nozzle body having a plurality of inflow passages through which the molten resin supplied from each of the melt extruders flows and a nozzle passage for discharging the molten resin;
An operating body having a plurality of connection passages for connecting each of the inflow passages to the nozzle passage, and operating so that each of the connection passages is alternately connected to the nozzle passage;
With
The operating body can be repeatedly rotated in the forward and reverse directions, whereby different types of first resin and second resin having different characteristics are continuously provided in the longitudinal direction of the fiber. The section (b) and the continuous section (b) with only the second resin are cross sections in which a boundary having an inclination angle (θ) is formed between the first resin and the second resin. The composite fiber manufacturing apparatus is configured to be capable of being discharged so as to be continuously formed with (a) interposed therebetween. The operating body is disposed in the spinning nozzle body so as to be rotatable in the forward and reverse directions about the rotation axis, and forms an outer circumferential surface around the rotation axis. It is arranged on the outer circumferential surface of the inlet and outlet,
The discharge port of each inflow passage and the inflow port of the nozzle passage are disposed to face the outer peripheral surface of the operating body,
The inlet and outlet of each connecting passage formed in the operating body are arranged so as to alternately and continuously connect the outlet of each inlet passage and the inlet of the nozzle passage as the operating body rotates forward and backward. The said composite fiber manufacturing apparatus of Claim 4 characterized by the above-mentioned. Composite fibers having first and second resins having different surface characteristics alternately and continuously formed in the longitudinal direction and having an inclined boundary between the first resin and the second resin Security thread for forgery prevention . The first resin and the second resin having different characteristics are selected from hue pigments, UV-sensitive fluorescent pigments, IR-sensitive absorbing pigments, X-ray absorbing metal materials, antibacterial materials, flame retardant materials, and deodorizing materials. The anti-counterfeiting safety yarn according to claim 6 , wherein the anti-counterfeiting safety yarn is a resin of the same component or a resin of different components containing one or more substances.

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